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Re: [MW:35965] WPS requalification for repair weld ASME B31.3

By Materials & Welding

See snap shot below from ASME B31.3. No Repair procedure is required. But PWHT has to be performed after Repair. PWHT soaking time should have been added during the original PQR Qualification or Simulated test coupon including Repair soak time shall be included during Material testing.


Inline image

Thanks & Regards

J.Gerald Jayakumar

0091-8838619635



On Wednesday, 28 January 2026 at 07:48:56 am IST, Babur Khan <mbabur.bwp@gmail.com> wrote:


Greetings,
Need expert opinion for the following query:
Construction Code ASME B31.3, Qualification ASME BPV Sec. IX.
One of the WPS is qualified for Low temperature Carbon steel with impact testing and PWHT. The qualification range is 20mm to 36mm. 
PWHT is applicable (Project specification). Soaking time was 1 hr 30 minutes.
Question: Is this WPS qualified for a repair weld with this soaking time? 
Is a new PQR to qualify the repair joint?

Best Regards,

cid:image001.png@01D0FB95.19500D80

Muhammad Babur Khan Lashari
Project Quality Supervisor.
API 570, API 510, CSWIP 3.2.2. ISO 9001:2015

Mob: +966 58 2774568 / +966 51 0559680

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